CN102829750B - Measurement method and device for detecting outline dimension of cylinder cover - Google Patents
Measurement method and device for detecting outline dimension of cylinder cover Download PDFInfo
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- CN102829750B CN102829750B CN201210307061.3A CN201210307061A CN102829750B CN 102829750 B CN102829750 B CN 102829750B CN 201210307061 A CN201210307061 A CN 201210307061A CN 102829750 B CN102829750 B CN 102829750B
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Abstract
The invention relates to a measurement method and a device for detecting the outline dimension of a cylinder cover, which are applied to the cylinder cover of a gasoline engine or a diesel engine of an automobile engine and solve the problem that a method for judging whether the outline dimension is qualified or not by utilizing the traditional 3D scanning equipment has long scanning time consumption and can not meet the requirement for detection of batched products. The measurement method comprises the following steps of: arranging at least three small lug boss planes which are not positioned on a same straight line on each side surface of the cylinder cover; arranging datum planes on X, Y, Z directions of the cylinder cover; measuring the actual dimension from each small lug boss plane to the datum planes; comparing the actual dimension from each small lug boss plane to the datum planes with the dimension from each predefined each small lug boss plane to the datum planes and a tolerancing standard, and judging that the outline dimension of the cylinder cover is qualified. The measurement method disclosed by the invention has the characteristics of easy operation and time saving and can realize the batched fast detection of products, thereby greatly increasing the production efficiency and probably controlling the outline dimensions of the products in batches.
Description
Technical field
The present invention relates to field of mechanical technique, be specifically related to a kind of measuring method and the device that detect outline dimension of cylinder cover, apply on the cylinder cap of gasoline engine in motor car engine or diesel engine.
Background technology
The outline dimension of cylinder cover of the engine of exploitation is both at home and abroad complicated at present, each side is made up of the Irregular Boundary Surface of complexity, in product design size detection process, cannot each complex side of Measurement accuracy relative to the range deviation of reference field, usually need the profile 3D adopting 3D scanning device scanning product, and contrast to judge that whether physical dimension is qualified with the former 3D of design model.
The shortcoming done like this is: need to be equipped with 3D scanning device, each scanning length consuming time, and initial in product design, casting quality is unstable, need strictly to control size, but 3D scan mode cannot meet the detection to bulk article.Generally, the complex structure such as cylinder cap, cylinder body, to judge that whether physical dimension is consistent with design three-dimensional model in Product checking process, needs to use spatial digitizer usually, by product scan-data comparison three Dimensional CAD Design data, obtain the data such as rainbow comparison chart; But spatial digitizer is expensive, need product spray development agent etc. in the process of scanning, bothersome time-consuming, detect the time that a product needs more than three hours the soonest, and most of company considers to be equipped with for economic benefit, but entrust other companies to carry out scanning to obtain audit report, the batch that cannot realize product detects fast.
In order to carry out physical dimension inspection efficiently to complex parts, simplifying the operation, saving time, improve and detect the frequency, realize the product accreditation of bulk article, need the measuring method of inventing a kind of detection outline dimension of cylinder cover newly badly.
Summary of the invention
Object of the present invention is exactly for above-mentioned defect, provides a kind of measuring method and the device that detect outline dimension of cylinder cover.
The technical solution used in the present invention is: a kind of measuring method detecting outline dimension of cylinder cover, comprises the steps:
(1) at least three not small boss planes are on the same line set on each side of cylinder cap;
(2) reference field is set on cylinder cap X, Y, Z tri-directions;
(3) physical size of each small boss plan range reference field is measured;
(4) size of the physical size of each small boss plan range reference field and predefined each small boss plan range reference field and tolerance standard are contrasted, judge that outline dimension of cylinder cover is qualified.
What at least three small boss planimetric positions that each side of described cylinder cap is arranged were large as far as possible is distributed in cylinder cap side, and the total area that the shape area that at least three small boss planes that each side of cylinder cap is arranged form accounts for this side is not less than 50%.
Described reference field is in cylinder cap side upper marginal position.
Detect a device for outline dimension of cylinder cover, it comprises cylinder body, and described cylinder body side is provided with at least three not small boss planes on the same line, and cylinder body is provided with reference field along X, Y, Z tri-directions.
Described cylinder body side comprises forward and backward, upper, left and right five sides.
What at least three small boss planimetric positions on described cylinder body side were large as far as possible is distributed in cylinder cap side, and the total area that the shape area that at least three small boss planes that cylinder body side is arranged form accounts for this side is not less than 50%.If there is deflection in mould split, then dimensional error, the corresponding mistake of physical dimension, therefore boss will be selected in plane large as far as possible; If boss arranged closely, possible measured value difference was small, cannot embody mould split and whether occur deflection, only have and select in distance large as far as possible, could represent whole large plane from measurement.
Described reference field is in cylinder body side upper marginal position.
The present invention has simple to operate, time saving feature, and the batch that can realize product detects fast, greatly enhances productivity, and the physical dimension making batch control product becomes possibility.
Accompanying drawing explanation
Fig. 1 is air inlet side planar survey point arrangenent diagram of the present invention;
Fig. 2 is exhaust side planar survey point arrangenent diagram of the present invention;
Fig. 3 is rear end face measurement point arrangenent diagram of the present invention;
Fig. 4 is chain shell front end face measurement point arrangenent diagram of the present invention;
Fig. 5 is face, firing chamber of the present invention roughing standard point schematic diagram;
Fig. 6 is oil pocket side of the present invention measurement point arrangenent diagram.
Embodiment
Below in conjunction with embodiment, the present invention will be further described in detail:
In an embodiment, a kind of measuring method detecting outline dimension of cylinder cover, its concrete steps are:
(1) at least three not small boss planes are on the same line set on each side of cylinder cap;
(2) reference field is set on cylinder cap X, Y, Z tri-directions;
(3) physical size of each small boss plan range reference field is measured;
(4) size of the physical size of each small boss plan range reference field and predefined each small boss plan range reference field and tolerance standard are contrasted, judge that outline dimension of cylinder cover is qualified.
What at least three small boss planimetric positions that each side of cylinder cap is arranged were large as far as possible is distributed in cylinder cap side, and the total area that the shape area that at least three small boss planes that each side of cylinder cap is arranged form accounts for this side is not less than 50%.Reference field is in cylinder cap side upper marginal position.
Detect a device for outline dimension of cylinder cover, it comprises cylinder body, and cylinder body side is provided with at least three not small boss planes on the same line, and cylinder body is provided with reference field A, B, C along X, Y, Z tri-directions.Cylinder body side comprises forward and backward, upper, left and right five sides.What at least three small boss planimetric positions on cylinder body side were large as far as possible is distributed in cylinder cap side, and the total area that the shape area that at least three small boss planes that cylinder body side is arranged form accounts for this side is not less than 50%.Reference field A, B, C are in cylinder body side upper marginal position.
As Fig. 1, first small boss plane 1, second small boss plane 2, the 3rd small boss plane 3 are the cylindrical boss of air inlet side, cylindrical convex height out-of-plane in this example is about 1mm, diameter is 3mm, that disperses as far as possible is distributed in air inlet side, measure the first small boss plane 1, second small boss plane 2, the 3rd small boss plane 3 during detection apart from the distance of roughing standard face A (as shown in Figure 1), contrast setting size and tolerance judge that whether this side is qualified.
As Fig. 2,4th small boss plane 4, the 5th small boss plane 5, the 6th small boss plane 6 are the cylindrical boss of exhaust side, that disperses as far as possible is distributed in exhaust side, measure the 4th small boss plane 4, the 5th small boss plane 5, the 6th small boss plane 6 during detection apart from the distance of roughing standard face A (as shown in Figure 1), contrast setting size and tolerance judge that whether this side is qualified.
As Fig. 3,7th small boss plane 7, the 8th small boss plane 8, the 9th small boss plane 9 are the cylindrical boss of rear end face, that disperses as far as possible is distributed in rear end face, measure the 7th small boss plane 7, the 8th small boss plane 8, the 9th small boss plane 9 during detection apart from the distance of roughing standard face B (as shown in Figure 3), contrast setting size and tolerance judge that whether this side is qualified.
As Fig. 4, tenth small boss plane the 10, the 11 small boss plane the 11, the 12 small boss plane 12 is the cylindrical boss of chain shell front end face, that disperses as far as possible is distributed in before chain shell, measure the distance of the tenth small boss plane the 10, the 11 small boss plane the 11, the 12 small boss plane 12 apart from roughing standard face B (as shown in Figure 3) during detection, contrast setting size and tolerance judge that whether this side is qualified.
As Fig. 6,13 small boss plane the 13, the 14 small boss plane the 14, the 15 small boss plane 15 is the cylindrical boss in oil pocket face, that disperses as far as possible is distributed in oil pocket face, measure the distance of the 13 small boss plane the 13, the 14 small boss plane the 14, the 15 small boss plane 15 apart from roughing standard face C (as shown in Figure 5) during detection, contrast setting size and tolerance judge that whether this side is qualified.
The principle that the present invention measures is: at each lateral layout of cylinder cap three small column boss, form three boss facets, because on every block mould of cylinder cap periphery of casting, relative size is consistent, these three little convexes can represent the physical dimension of this side mold, can represent position and the size of corresponding construction on cylinder cap.Preset in the design process each boss relatively with the standard of reference field dimensional tolerence and specification product, only by the size of general three-dimensional device measuring facet distance reference field, can need judge whether the physical dimension of product qualified.
Overall measurement process of the present invention is: design three small boss planes in every side of cylinder cap, the physical dimension of this side mold is represented with it, in cylinder cap design three-dimensional data, define size and the tolerance in each small boss plan range product benchmark face, after product is made, by the physical size of three-dimensional coordinates measurement each small boss distance roughing standard, if in scope of design, namely mould split is represented reasonable, judge that outline dimension of cylinder cover is qualified, if not in scope of design, then need the split again of adjustment mould; Like this, only by the size of general three-dimensional device measuring three small boss plane separation reference fields, can need judge whether the physical dimension of product is qualified.And simple to operate, save time, the time detecting a product is about 10 minutes, and only needs three-dimensional equipment, and the batch that can realize product detects fast, and the physical dimension making batch control product becomes possibility.
Claims (6)
1. detect a measuring method for outline dimension of cylinder cover, it is characterized in that, comprise the steps:
(1) at least three not small boss planes are on the same line set on each side of cylinder cap;
(2) reference field is set on cylinder cap X, Y, Z tri-directions;
(3) physical size of each small boss plan range reference field is measured;
(4) size of the physical size of each small boss plan range reference field and predefined each small boss plan range reference field and tolerance standard are contrasted, judge that outline dimension of cylinder cover is qualified.
2. a kind of measuring method detecting outline dimension of cylinder cover according to claim 1, is characterized in that: the total area that the shape area that at least three small boss planes that each side of described cylinder cap is arranged form accounts for this side is not less than 50%.
3. a kind of measuring method detecting outline dimension of cylinder cover according to claim 1, is characterized in that: described reference field is in cylinder cap side upper marginal position.
4. one kind is detected the device of outline dimension of cylinder cover, it comprises cylinder body, it is characterized in that: described cylinder body side is provided with at least three not small boss planes on the same line, cylinder body is provided with reference field along X, Y, Z tri-directions, and the total area that the shape area that at least three small boss planes that described cylinder body side is arranged form accounts for this side is not less than 50%.
5. a kind of device detecting outline dimension of cylinder cover according to claim 4, is characterized in that: described cylinder body side comprises forward and backward, upper, left and right five sides.
6. a kind of device detecting outline dimension of cylinder cover according to claim 4, is characterized in that: described reference field is in cylinder body side upper marginal position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210307061.3A CN102829750B (en) | 2012-08-27 | 2012-08-27 | Measurement method and device for detecting outline dimension of cylinder cover |
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| CN201210307061.3A CN102829750B (en) | 2012-08-27 | 2012-08-27 | Measurement method and device for detecting outline dimension of cylinder cover |
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| CN102829750A CN102829750A (en) | 2012-12-19 |
| CN102829750B true CN102829750B (en) | 2015-01-21 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759696B (en) * | 2013-12-31 | 2016-04-13 | 广西玉柴机器股份有限公司 | Cavity inner-cavity structure 3-D scanning detection method |
| CN104776821A (en) * | 2015-03-27 | 2015-07-15 | 中国北方发动机研究所(天津) | Dimension estimation method for high-power-density diesel engine for vehicle |
| CN108620539B (en) * | 2017-12-21 | 2020-06-23 | 贵州安吉航空精密铸造有限责任公司 | Investment casting method for casting with complex curved surface shape |
| CN111609827B (en) * | 2019-02-26 | 2022-01-11 | 上汽通用汽车有限公司 | Construction method of theoretical precise datum plane of engine cylinder block and engine cylinder block |
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| CN101169317A (en) * | 2007-11-22 | 2008-04-30 | 重庆长安汽车股份有限公司 | Engine air cylinder lid combustion chamber quick dimension measuring structure |
| CN202066458U (en) * | 2011-05-18 | 2011-12-07 | 昆明嘉和科技股份有限公司 | Large-size part with measuring basis |
| CN202789171U (en) * | 2012-08-27 | 2013-03-13 | 东风汽车公司 | Cylinder cover structure with measuring point |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DK2261594T3 (en) * | 2009-06-11 | 2013-02-18 | Waertsilae Nsd Schweiz Ag | Liner inspection tool and method of inspecting a cylinder liner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101169317A (en) * | 2007-11-22 | 2008-04-30 | 重庆长安汽车股份有限公司 | Engine air cylinder lid combustion chamber quick dimension measuring structure |
| CN202066458U (en) * | 2011-05-18 | 2011-12-07 | 昆明嘉和科技股份有限公司 | Large-size part with measuring basis |
| CN202789171U (en) * | 2012-08-27 | 2013-03-13 | 东风汽车公司 | Cylinder cover structure with measuring point |
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| 缸盖阀座密封带定直径位置尺寸的三坐标测量实践;叶宗茂等;《金属加工》;20080209(第03期);51-52页 * |
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